# How can counting on help me add two-digit numbers?

## How can I add two-digit numbers?

Adding two-digit numbers can be tricky.

One way to do it is by counting on.

This is easier if you count on in **tens** first and then count on in **units**.

### Example

**40 + 35 = ?**

Count on in tens. **30** is three tens. **40, 50, 60, 70**

Now we need to count on in units. There are five units. **70, 71, 72, 73, 74, 75**

So **40 + 35 = 75**

Did that work for you?